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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Frank Li <Frank.Li@nxp.com>
Cc: alexandre.belloni@bootlin.com, conor.culhane@silvaco.com,
	imx@lists.linux.dev, joe@perches.com,
	linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org,
	zbigniew.lukwinski@linux.intel.com
Subject: Re: [PATCH v4 3/6] i3c: add actual_len in i3c_priv_xfer
Date: Thu, 30 Nov 2023 11:17:12 +0100	[thread overview]
Message-ID: <20231130111712.6438de35@xps-13> (raw)
In-Reply-To: <20231129221225.387952-4-Frank.Li@nxp.com>

Hi Frank,

Frank.Li@nxp.com wrote on Wed, 29 Nov 2023 17:12:22 -0500:

> In MIPI I3C Specification:
> 
> "Ninth Bit of SDR Target Returned (Read) Data as End-of-Data: In I2C, the
> ninth Data bit from Target to Controller is an ACK by the Controller. By
> contrast, in I3C this bit allows the Target to end a Read, and allows the
> Controller to Abort a Read. In SDR terms, the ninth bit of Read data is
> referred to as the T-Bit (for ‘Transition’)"
> 
> I3C allow devices early terminate data transfer. So need "actual_len" field
> to indicate how much get by i3c_priv_xfer.
> 
> Signed-off-by: Frank Li <Frank.Li@nxp.com>

Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>

Thanks,
Miquèl

WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Frank Li <Frank.Li@nxp.com>
Cc: alexandre.belloni@bootlin.com, conor.culhane@silvaco.com,
	imx@lists.linux.dev, joe@perches.com,
	linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org,
	zbigniew.lukwinski@linux.intel.com
Subject: Re: [PATCH v4 3/6] i3c: add actual_len in i3c_priv_xfer
Date: Thu, 30 Nov 2023 11:17:12 +0100	[thread overview]
Message-ID: <20231130111712.6438de35@xps-13> (raw)
In-Reply-To: <20231129221225.387952-4-Frank.Li@nxp.com>

Hi Frank,

Frank.Li@nxp.com wrote on Wed, 29 Nov 2023 17:12:22 -0500:

> In MIPI I3C Specification:
> 
> "Ninth Bit of SDR Target Returned (Read) Data as End-of-Data: In I2C, the
> ninth Data bit from Target to Controller is an ACK by the Controller. By
> contrast, in I3C this bit allows the Target to end a Read, and allows the
> Controller to Abort a Read. In SDR terms, the ninth bit of Read data is
> referred to as the T-Bit (for ‘Transition’)"
> 
> I3C allow devices early terminate data transfer. So need "actual_len" field
> to indicate how much get by i3c_priv_xfer.
> 
> Signed-off-by: Frank Li <Frank.Li@nxp.com>

Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>

Thanks,
Miquèl

-- 
linux-i3c mailing list
linux-i3c@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-i3c

  reply	other threads:[~2023-11-30 10:17 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-29 22:12 [PATCH v4 0/6] i3c: master: some improvment for i3c master Frank Li
2023-11-29 22:12 ` Frank Li
2023-11-29 22:12 ` [PATCH v4 1/6] i3c: master: add enable(disable) hot join in sys entry Frank Li
2023-11-29 22:12   ` Frank Li
2023-11-30 10:13   ` Miquel Raynal
2023-11-30 10:13     ` Miquel Raynal
2023-11-29 22:12 ` [PATCH v4 2/6] i3c: master: svc: add hot join support Frank Li
2023-11-29 22:12   ` Frank Li
2023-11-30 10:16   ` Miquel Raynal
2023-11-30 10:16     ` Miquel Raynal
2023-11-29 22:12 ` [PATCH v4 3/6] i3c: add actual_len in i3c_priv_xfer Frank Li
2023-11-29 22:12   ` Frank Li
2023-11-30 10:17   ` Miquel Raynal [this message]
2023-11-30 10:17     ` Miquel Raynal
2023-11-29 22:12 ` [PATCH v4 4/6] i3c: svc: rename read_len as actual_len Frank Li
2023-11-29 22:12   ` Frank Li
2023-11-29 22:12 ` [PATCH v4 5/6] i3c: master: svc return actual transfer data len Frank Li
2023-11-29 22:12   ` Frank Li
2023-11-30 10:09   ` Miquel Raynal
2023-11-30 10:09     ` Miquel Raynal
2023-11-29 22:12 ` [PATCH v4 6/6] i3c: add API i3c_dev_gettstatus_format1() to get target device status Frank Li
2023-11-29 22:12   ` Frank Li
2023-11-30 10:19   ` Miquel Raynal
2023-11-30 10:19     ` Miquel Raynal
2023-11-30 17:49     ` Frank Li
2023-11-30 17:49       ` Frank Li
2023-11-30 19:16       ` Miquel Raynal
2023-11-30 19:16         ` Miquel Raynal
2023-11-30 22:00     ` [PATCH v4 6/6] i3c: add API i3c_dev_gettstatus_format1() to get target device statusy Frank Li
2023-11-30 22:00       ` Frank Li

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